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THIN-COAT CERAMIC FINISH AND METHOD FOR THE PRODUCTION THEREOF, FRICTION SURFACE BASED ON A THIN-COAT CERAMIC FINISH AND METHOD FOR THE PRODUCTION THEREOF
THIN-COAT CERAMIC FINISH AND METHOD FOR THE PRODUCTION THEREOF, FRICTION SURFACE BASED ON A THIN-COAT CERAMIC FINISH AND METHOD FOR THE PRODUCTION THEREOF
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机译:薄涂层陶瓷涂料及其生产方法,基于薄涂层陶瓷涂料的摩擦表面及其生产方法
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摘要
The invention relates to oxide coatings and can be used in mechanical engineering, in addition to the chemical and petrochemical industries. A thin-coat ceramic finish consists of crystals of alpha-Al2O3 having a filiform structure with alternating arched and spiral areas and which are disposed within a matrix of gamma-Al2O3 and mullite 3 A2O32SiO2. The production of the thin-coat ceramic finish comprises the following: a powder mixture of 70 % SiO2 and 30 % Al2O3 is added to an alkaline electrol yte which contains liquid glass. The treatment is performed in a cathode-anode regime Jc/ Ja= 1.0-1.5. A friction surface based on the thin-coat ceramic finish consists of crystals of alpha- Al2O3 which come out directly onto the surface of friction outside the matrix of gamma-Al¿2?O3 and mullite 3 A2O32SiO2. In order to obtain the friction surface, the coating is abraded. The hardness of an abrasive tool must be higher than resistance of a base of the friction surface and not lower than the resistance of filiform crystals of alpha- Al2O3. The abrasion is continued until a pseudoviscous layer is formed. The invention ensures increased micro-hardness and crack resistance which are the main criteria of the resistance of ceramic coatings.
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机译:本发明涉及氧化物涂层,除化学和石油化学工业外,还可用于机械工程。薄涂层陶瓷饰面由具有丝状结构,交替的弓形和螺旋形区域的α-Al2O3晶体组成,并置于γ-Al2O3和莫来石3 A2O32SiO2的基质中。薄涂层陶瓷饰面的生产包括以下内容:将70%SiO2和30%Al2O3的粉末混合物添加到含有液体玻璃的碱性电解液中。该处理在阴极-阳极方案Jc / Ja = 1.0-1.5下进行。基于薄陶瓷涂层的摩擦表面由α-Al2O3晶体组成,该晶体直接出现在γ-Al2?3O3和莫来石3 A2O32SiO2基质外部的摩擦表面上。为了获得摩擦表面,涂层被研磨。研磨工具的硬度必须高于摩擦表面基部的电阻,并且不低于α-Al2O3的丝状晶体的电阻。继续磨损直到形成伪粘性层。本发明确保增加的显微硬度和抗裂性,这是陶瓷涂层的抗性的主要标准。
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