{"id":205333,"date":"2024-10-19T13:10:55","date_gmt":"2024-10-19T13:10:55","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-b656-1991\/"},"modified":"2024-10-25T05:50:57","modified_gmt":"2024-10-25T05:50:57","slug":"astm-b656-1991","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-b656-1991\/","title":{"rendered":"ASTM-B656 1991"},"content":{"rendered":"

ASTM B656-91<\/h3>\n

Withdrawn Standard: Standard Guide for Autocatalytic (Electroless) Nickel-Phosphorus Deposition on Metals for Engineering Use (Withdrawn 2000)<\/h4>\n
\n

ASTM B656<\/h4>\n

Scope<\/strong><\/p>\n

1.1 This guide gives information about the deposition of autocatalytic nickel for engineering uses (Note 1). It is not intended to be a standardized procedure, but rather a guide for obtaining smooth, adherent, and uniform coatings of a nickel-phosphorus alloy from acid-plating solutions (Note 2).<\/p>\n

Note 1-Autocatalytic nickel is also known as electroless or chemical nickel. Note 2-Nickel-boron alloys are not covered in this document. <\/p>\n

1.2 Autocatalytic nickel deposits covered in this guide are alloys of nickel and phosphorus produced by autocatalytic chemical reduction with hypophosphite. Because the nickel deposit is a catalyst for the reaction, the process is self-sustaining.<\/p>\n

1.3 The chemical and physical properties of the deposit vary with the pretreatment of the substrate, plating bath chemistry, phosphorus content, and subsequent heat treatment. For more details on such properties, see ASTM STP 265 (1) , (2), (3), (4), and (7). Also, refer to Figs. X1.1, X1.2, and X1.3 in the Appendix.<\/p>\n

1.4 This guide covers the metal preparation and deposition process. The testing of autocatalytic nickel-phosphorus deposits is covered in Specification B733.<\/p>\n

1.5 This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. See 8.11 and 8.13 for specific safety precautionary statements.<\/p>\n

Keywords<\/strong><\/p>\n

Autocatalytic coatings; Coatings-autocatalytic; Electroless coatings; Engineering applications-electrodeposited coatings; Nickel alloys-metallic coatings; Nickel-phosphorus (autocatalytic); autocatalytic electroless nickel-phosphorus deposition on metals (for; engineering use), spec<\/p>\n

ICS Code<\/strong><\/p>\n

ICS Number Code 25.220.40 (Metallic coatings)<\/p>\n

DOI:<\/strong> 10.1520\/B0656-91<\/p>\n<\/div>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Referenced Documents <\/td>\n<\/tr>\n
2<\/td>\nSignificance and Use
General Considerations
Metal Preparation
TABLE 1 <\/td>\n<\/tr>\n
4<\/td>\nThe Plating Process and Its Operation
Deposit Composition
TABLE 2
TABLE 3 <\/td>\n<\/tr>\n
5<\/td>\nGeneral Precautions
Post Treatments
TABLE 4 <\/td>\n<\/tr>\n
6<\/td>\nA1. FORMULAS FOR SOLUTIONS
A1.1 Alkaline Cleaner
A1.2 Smut Removal
A1.3 Activation of Nickel and Stainless Steel Substrates
A1.4 Nickel Strikes <\/td>\n<\/tr>\n
7<\/td>\nX1. <\/td>\n<\/tr>\n
8<\/td>\nFIG. X1.1
FIG. X1.2 <\/td>\n<\/tr>\n
9<\/td>\nREFERENCES
FIG. X1.3 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

B656-91 Standard Guide for Autocatalytic (Electroless) Nickel-Phosphorus Deposition on Metals for Engineering Use (Withdrawn 2000)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n1991<\/td>\n9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":205336,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[442,2637],"product_tag":[],"class_list":{"0":"post-205333","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-25-220-40","7":"product_cat-astm","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/205333","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/205336"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=205333"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=205333"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=205333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}