標準編號:	SJ 20146-1992
中文名稱:	銀電鍍層總規范
英文名稱:	Generic specification for electrodeposited silver coating
行業分類:	SJ    電子行業標準
發布機構:	中國電子工業總公司
發布日期:	1992-11-19
實施日期:	1993-5-1
標準狀態:	valid
翻譯語言:	英文
文件格式:	PDF
中文字符數:	12,000 字
翻譯價格(元):	840.0
交付時間:	付款后 1 個工作日

1 Scope 1.1 Subject content This Specification specifies all requirements of electrodeposited silver coating. 1.2 Scope of application This Specification is applicable to the electrodeposited silver coating of metallic and nonmetallic workpieces for electronic and electric product. 1.3 Classification 1.3.1 Type Silver coating can be divided into the following three types as required (see 3.3.4 and 6.3): Type I — No brightness Type II — Half brightness Type III — Brightness 1.3.2 Grade Silver coating can be divided into the following two grades as required (see 3.4.7 and 6.1.2): Grade A — With reinforced anti-discoloration treatment (chromate treatment) Grade B — Without reinforced anti-discoloration treatment 2 Normative References GB 1031-83 Surface Roughness Parameters and Their values GB 3131-88 Tin-lead Solder GB 4677.8-84 Test Methods of Plating and Coating Thickness by Beta Backscattering for Printed Boards GB 4955-85 Measurement of Coating Thickness — Coulometric Method by Anodic Dissolution GB 4956-85 Non-magnetic Coatings on Magnetic Substrates — Measurement of Coating Thickness — Magnetic Method GB 6462-86 Metallic and Oxide Coatings — Measurement of Coating Thickness — Microscopical Method GB 9491-88 Liquid Flux for Soldering (Rosin Base) GB 9790-88 Metallic and Related Coatings — Vickers and Knoop Microhardness Tests GB 11378-90 Metallic Coatings — Measurement of Coating Thickness — Profilometric Method GB 12307.1-90 Metallic Coatings — Test Methods for Electrodeposited Silver and Silver Alloy Coatings — Part 1: Determination of Coating Thickness GB/T 13911-92 Expression Methods for Metallic Coating and Chemical Treatment GJB 179-86 Sampling Procedures and Tables for Inspection by Attributes SJ 20147.1-92 Measurement Methods for Electrodeposited Silver and Silver Alloy Coating Thickness — Method by the X-ray Fluorescent Spectromentry SJ 20147.2-92 Determination Methods for Electrodeposited Silver and Silver Alloy Coatings — Determination of the Presencl of Residual Salts 3 Requirements 3.1 Materials Used materials shall be able to produce electrodeposited silver coating in conformity with the requirements of this Specification. 3.2 Coating quality