{"id":4528,"date":"2026-06-25T06:57:52","date_gmt":"2026-06-25T06:57:52","guid":{"rendered":"https:\/\/beiyutitanium.com\/mmo-coated-titanium-anode-guide\/"},"modified":"2026-08-30T01:45:00","modified_gmt":"2026-08-30T01:45:00","slug":"mmo-coated-titanium-anode-guide","status":"publish","type":"post","link":"https:\/\/beiyutitanium.com\/fr\/mmo-coated-titanium-anode-guide\/","title":{"rendered":"Anode en titane rev\u00eatue MMO | Ru-Ir & Ir-Ta DSA | Beiyu"},"content":{"rendered":"

Une anode en titane rev\u00eatue MMO est un substrat en titane recouvert d'une couche d'oxydes m\u00e9talliques mixtes, \u00e9galement appel\u00e9e anode dimensionnellement stable (DSA). La base en titane apporte la r\u00e9sistance m\u00e9canique et la r\u00e9sistance \u00e0 la corrosion, et le rev\u00eatement d'oxyde porte la r\u00e9action \u00e9lectrochimique sans que l'anode ne se dissolve. Ce guide traite des rev\u00eatements, du substrat, des formes et des applications, ainsi que de ce qu'il convient de sp\u00e9cifier sur une demande.<\/p>\n

Types de rev\u00eatement et quand les utiliser<\/h2>\n

Le rev\u00eatement est choisi en fonction de la r\u00e9action et de l'\u00e9lectrolyte. Un rev\u00eatement en oxyde de rut\u00e9nium-iridium (Ru-Ir) favorise le d\u00e9gagement de chlore et tient bon en eau de mer, en saumure et dans d'autres environnements chlorur\u00e9s ou s\u00e9v\u00e8res. Un rev\u00eatement en oxyde d'iridium-tantale (Ir-Ta) favorise le d\u00e9gagement d'oxyg\u00e8ne et est utilis\u00e9 dans les \u00e9lectrolytes acides sulfat\u00e9s et en service \u00e0 faible teneur en chlorure ou en eau douce.<\/p>\n\n\n\n\n\n\n
Rev\u00eatement<\/th>\nR\u00e9action principale<\/th>\n\u00c9lectrolyte typique<\/th>\n<\/tr>\n<\/thead>\n
Oxyde Ru-Ir<\/td>\nD\u00e9gagement de chlore<\/td>\nEau de mer, saumure, solutions chlorur\u00e9es<\/td>\n<\/tr>\n
Oxyde Ir-Ta<\/td>\nD\u00e9gagement d'oxyg\u00e8ne<\/td>\nSulfate acide, faible teneur en chlorure, eau douce<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Substrat et formes<\/h2>\n

Le substrat est g\u00e9n\u00e9ralement du titane commercialement pur Grade 1, pour sa r\u00e9sistance \u00e0 la corrosion et l'adh\u00e9rence du rev\u00eatement. Les anodes sont fournies sous forme de plaque, de treillis d\u00e9ploy\u00e9 ou tiss\u00e9, de tube, de barre et de fil, afin que la forme puisse s'adapter \u00e0 la cellule ou au proc\u00e9d\u00e9. Indiquez la forme et les dimensions, ainsi que la surface active.<\/p>\n\n\n\n\n\n\n
Point<\/th>\nCe que le guide indique<\/th>\n<\/tr>\n<\/thead>\n
Substrat<\/td>\nG\u00e9n\u00e9ralement du titane Grade 1 commercialement pur, pour sa r\u00e9sistance \u00e0 la corrosion et l'adh\u00e9rence du rev\u00eatement<\/td>\n<\/tr>\n
Formes<\/td>\nPlaque, m\u00e9tal d\u00e9ploy\u00e9 et les autres formes r\u00e9pertori\u00e9es par le guide<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Applications courantes<\/h2>\n

Les anodes en titane rev\u00eatues MMO sont utilis\u00e9es dans les proc\u00e9d\u00e9s chlore-alcali et de g\u00e9n\u00e9ration de chlore sur site pour l'eau municipale, les piscines et la d\u00e9sinfection, dans l'\u00e9lectro-extraction et l'\u00e9lectroraffinage du cuivre, du zinc et du nickel, dans les lignes de feuilles de cuivre et de galvanoplastie, en \u00e9lectrodialyse, ainsi que dans le traitement des eaux us\u00e9es et le traitement \u00e9lectrochimique de l'eau. Pour la protection cathodique par courant impos\u00e9, consultez le guide sur les anodes en titane pour la protection cathodique<\/a>.<\/p>\n

Pour un service sp\u00e9cifique \u00e0 la cellule, le guide du titane dans les cellules de chlore-alcali<\/a> distingue les familles de rev\u00eatements, le type de cellule et les param\u00e8tres de fonctionnement \u00e0 indiquer dans la demande.<\/p>\n

Pour une pr\u00e9s\u00e9lection reproductible \u00e0 partir des pages d'entreprises, utilisez la liste des fabricants d'anodes en titane<\/a>; elle maintient Beiyu hors de l'ensemble class\u00e9 et distingue les champs de rev\u00eatement publi\u00e9s des v\u00e9rifications de la demande de prix.<\/p>\n

Ce qu'il faut sp\u00e9cifier dans une demande de prix pour anode MMO<\/h2>\n

Indiquez l'application et l'\u00e9lectrolyte, le type de rev\u00eatement, la nuance et la forme du substrat, les dimensions et la surface active, la densit\u00e9 de courant de service et la dur\u00e9e de vie de conception, ainsi que la port\u00e9e du certificat. La composition et le grammage du rev\u00eatement sont sp\u00e9cifi\u00e9s selon l'usage et la port\u00e9e de la commande. Parcourez le anode en titane<\/a> gamme ou envoyez les exigences \u00e0 penn@beiyutitanium.com<\/a>.<\/p>\n\n\n\n\n\n\n\n\n\n
\u00c9l\u00e9ment \u00e0 indiquer dans une demande de prix d'anode MMO<\/th>\nD\u00e9tail<\/th>\n<\/tr>\n<\/thead>\n
Application et \u00e9lectrolyte<\/td>\nL'application et l'\u00e9lectrolyte<\/td>\n<\/tr>\n
Rev\u00eatement<\/td>\nLe type de rev\u00eatement<\/td>\n<\/tr>\n
Substrat<\/td>\nNuance et forme du substrat<\/td>\n<\/tr>\n
G\u00e9om\u00e9trie<\/td>\nDimensions et zone de travail<\/td>\n<\/tr>\n
Service<\/td>\nDensit\u00e9 de courant de fonctionnement<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

\u00c0 propos de l'auteur<\/h2>\n

Penn Ma<\/strong> dirige l'activit\u00e9 internationale de Beiyu Titanium et r\u00e9pond lui-m\u00eame \u00e0 ses demandes de prix, en v\u00e9rifiant la nuance, la norme, les dimensions, la tol\u00e9rance et l'\u00e9tendue du certificat par rapport aux capacit\u00e9s de l'usine avant l'\u00e9mission d'un prix. Il poss\u00e8de 15 ann\u00e9es d'exp\u00e9rience dans l'exportation de titane, couvrant les barres, tiges, plaques, tubes, blocs, anneaux, bobines, lingots, pi\u00e8ces forg\u00e9es et pi\u00e8ces usin\u00e9es, avec la documentation EN 10204 3.1 et la tra\u00e7abilit\u00e9 par num\u00e9ro de coul\u00e9e utilis\u00e9es quotidiennement. Avant Beiyu, il a travaill\u00e9 chez Koch (Koch-Glitsch) et a particip\u00e9 directement \u00e0 la livraison d'un projet p\u00e9trochimique SABIC \u00e0 Fujian, Chine, d'o\u00f9 proviennent les habitudes c\u00f4t\u00e9 acheteur \u00e0 l'origine de ce site : plans d'inspection et d'essais, certification mati\u00e8re et tra\u00e7abilit\u00e9 par num\u00e9ro de coul\u00e9e, coordination du contr\u00f4le par tierce partie et contr\u00f4le des dossiers de projet. Lire le profil complet de l'auteur<\/a>.<\/p>\n<\/section>\n

<\/p>\n

R\u00e9appliquer un rev\u00eatement sur une anode us\u00e9e plut\u00f4t que la remplacer<\/h2>\n

Une anode en titane rev\u00eatue atteint sa fin de vie lorsque le rev\u00eatement perd son activit\u00e9, et non lorsque le m\u00e9tal se d\u00e9t\u00e9riore. Le titane est un m\u00e9tal valve : l\u00e0 o\u00f9 le rev\u00eatement s'\u00e9caille, le titane expos\u00e9 se passive au lieu de se corroder. C'est pourquoi le m\u00eame substrat peut normalement \u00eatre d\u00e9cap\u00e9 et rev\u00eatu \u00e0 nouveau plut\u00f4t que mis au rebut, et pourquoi la d\u00e9cision est commerciale plut\u00f4t que m\u00e9tallurgique.<\/p>\n\n\n\n\n\n\n\n\n
Question<\/th>\nCe qui d\u00e9termine la d\u00e9cision<\/th>\n<\/tr>\n<\/thead>\n
Le substrat est-il encore utilisable<\/td>\nSi le titane est intact et dimensionnellement conforme, puisque c'est le rev\u00eatement plut\u00f4t que le m\u00e9tal qui s'est us\u00e9<\/td>\n<\/tr>\n
La r\u00e9application du rev\u00eatement en vaut-elle la peine<\/td>\nLorsque la perte caus\u00e9e par l'augmentation de la tension de cellule d\u00e9passe le co\u00fbt du d\u00e9capage et de la r\u00e9application du rev\u00eatement, cette derni\u00e8re est l'option raisonnable<\/td>\n<\/tr>\n
Comment l'ancien rev\u00eatement est retir\u00e9<\/td>\nD\u00e9capage au sel fondu, \u00e9bullition acide ou \u00e9lectrolyse au sulfate, choisis en fonction du rev\u00eatement \u00e0 retirer<\/td>\n<\/tr>\n
Quel devrait \u00eatre le nouveau rev\u00eatement<\/td>\nLe service peut avoir chang\u00e9 depuis l'achat initial de l'anode, de sorte que la famille de rev\u00eatement est reconfirm\u00e9e plut\u00f4t que r\u00e9p\u00e9t\u00e9e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

L'\u00e9tape de d\u00e9capage est plus importante qu'il n'y para\u00eet. La couche d\u00e9faillante est retir\u00e9e jusqu'au titane propre avant l'application du nouveau rev\u00eatement.<\/p>\n

Une demande de r\u00e9application de rev\u00eatement contient des informations diff\u00e9rentes d'une demande pour une anode neuve. Indiquez la forme et les dimensions de l'anode, le rev\u00eatement actuellement pr\u00e9sent, le service auquel elle a \u00e9t\u00e9 soumise, la tension de cellule actuelle par rapport \u00e0 celle lorsqu'elle \u00e9tait neuve, et si le service change. Beiyu Titanium examine ces champs avant offre, et l'\u00e9tat du substrat est \u00e9valu\u00e9 \u00e0 r\u00e9ception plut\u00f4t que pr\u00e9sum\u00e9 \u00e0 partir de la description.<\/p>\n

D\u00e9tails des sp\u00e9cifications avec sources<\/h2>\n

ASTM B265<\/a> quantifie pourquoi Grade 1 est le substrat MMO par d\u00e9faut : UNS R50250 est la nuance commercialement pure la plus douce, avec un oxyg\u00e8ne plafonn\u00e9 \u00e0 0,18 pour cent en masse et une r\u00e9sistance \u00e0 la traction minimale de 240 MPa, la surface \u00e0 faible teneur en \u00e9l\u00e9ments interstitiels sur laquelle un rev\u00eatement d'oxyde s'ancre. Les normes de substrat suivent ensuite la forme, B265 pour les stocks de plaque et de maille et B348 pour les barres, tandis que la r\u00e9partition des rev\u00eatements pr\u00e9sent\u00e9e ci-dessus est \u00e9lectrochimique, oxyde de ruth\u00e9nium-iridium pour le d\u00e9gagement de chlore contre oxyde d'iridium-tantale pour le d\u00e9gagement d'oxyg\u00e8ne.<\/p>\n

La part de Beiyu Titanium dans une anode MMO est le substrat : Beiyu fournit du titane Grade 1 et Grade 2 en plaque \u00e0 partir de 0,5 mm d'\u00e9paisseur, en barre de 1 \u00e0 500 mm de diam\u00e8tre et en fil de 0,8 \u00e0 6,0 mm pour les formes d'anode en plaque, tige, treillis et fil que cette page \u00e9num\u00e8re. Le rev\u00eatement d'oxydes m\u00e9talliques mixtes lui-m\u00eame est appliqu\u00e9 par une \u00e9tape de rev\u00eatement sp\u00e9cialis\u00e9e pour le service que d\u00e9finit la commande, et non \u00e0 l'usine de titane ; une offre Beiyu porte donc le grade du substrat, la forme et les dimensions avec un certificat EN 10204 3.1 pour le titane, et le type de rev\u00eatement, la charge et la dur\u00e9e de vie de conception comme lignes de commande distinctes.<\/p>\n

<\/p>","protected":false},"excerpt":{"rendered":"

An MMO coated titanium anode is a titanium substrate coated with a mixed metal oxide layer, also called a dimensionally stable anode (DSA). The titanium base gives mechanical strength and corrosion resistance, and the oxide coating carries the electrochemical reaction without the anode dissolving. This guide covers the coatings, substrate, forms and applications, and what 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Over 15 years in titanium export he has learned to review each specification line himself, checking grade, standard, dimensions, tolerance and certificate scope against mill capability before quoting, rather than routing enquiries through a sales desk. He came to titanium supply from the other side of the transaction. Before leading Beiyu's international business he worked at Koch (Koch-Glitsch) and was directly involved in delivering a SABIC petrochemical project in Fujian, China. That work was built on inspection and test plans, material certification and heat traceability, third party inspection coordination, and project documentation and dossier control. Those are the same four things a process industry or regulated buyer will hold a titanium supplier to, and having had to enforce them as a customer is why they are treated here as part of the supply rather than as paperwork produced afterwards. His day-to-day work spans the questions this site is written to answer: choosing between commercially pure and alloyed titanium grades for a corrosive service, reading a mill test certificate against the ordered standard, and matching a buyer's designation (ASTM grade, UNS, German Werkstoff number or French NF code) to the same metal across markets. 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Ce travail reposait sur des plans de contr\u00f4le et d'essais, la certification des mat\u00e9riaux et la tra\u00e7abilit\u00e9 par num\u00e9ro de coul\u00e9e, la coordination du contr\u00f4le par tierce partie, ainsi que le contr\u00f4le de la documentation et des dossiers de projet. Ce sont les quatre m\u00eames \u00e9l\u00e9ments qu'un acheteur de l'industrie des proc\u00e9d\u00e9s ou un acheteur soumis \u00e0 r\u00e9glementation exigera d'un fournisseur de titane, et le fait d'avoir d\u00fb les faire appliquer en tant que client explique qu'ils soient trait\u00e9s ici comme faisant partie de la fourniture plut\u00f4t que comme des documents produits ult\u00e9rieurement. Son travail quotidien couvre les questions auxquelles ce site est destin\u00e9 \u00e0 r\u00e9pondre : choisir entre des nuances de titane commercialement pur et alli\u00e9 pour un service corrosif, lire un certificat mati\u00e8re par rapport \u00e0 la norme command\u00e9e, et faire correspondre la d\u00e9signation d'un acheteur (nuance ASTM, UNS, num\u00e9ro Werkstoff allemand ou code NF fran\u00e7ais) au m\u00eame m\u00e9tal sur diff\u00e9rents march\u00e9s. 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