Patent
Electroless gold plating method
Noriko Hattori,Shigemitsu Kawagishi,Kazuyoshi Okuno,Mitsuaki Tadakoshi,Eiichi Torikai,光章 只腰,和義 奥野,重光 川岸,典子 服部,栄一 鳥養 +9 more
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TLDR
In this article, the authors proposed a method to make it possible to continuously use an electroless gold plating soln. over a long period of time while maintaining a constant plating rate and uniformity of deposited films by keeping the concn. of cyanide ions in the soln within a certain range.Abstract:
PURPOSE:To make it possible to continuously use an electroless gold plating soln. over a long period of time while maintaining a constant plating rate and uniformity of deposited films by keeping the concn. of cyanide ions in the plating soln. within a certain range without deteriorating the performance of the plating soln. CONSTITUTION:When electroless gold plating is carried out with a plating soln. contg. gold cyanide, alkali cyanide, a reducing agent, alkali hydroxide, a crystal regulating agent and a stabilizing agent, an aldehyde or ketone compd. is added at the time of replenishing gold cyanide.read more
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Patent
Electroless gold plating solution
Katsushige Iwamatsu,Kimiko Kudo,Naomi Murase,Kaoru Naito,Teruaki Shimoji,輝明 下地,薫 内藤,克茂 岩松,喜美子 工藤,直美 村瀬 +9 more
TL;DR: In this paper, the authors proposed an electroless gold plating solution which can form a good plating film on an Electroless Nickel Plating film and can minimize the corrosion of the nickel plating.
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Electroless gold-plating liquid
TL;DR: In this article, an autocatalyst type electroless gold-plating liquid with high plating rate was proposed, which consisted of the salt of gold sulfite, a complexing agent and a reducing agent.
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Method for maintaining plating capability of electroless gold-plating bath
Toru Kamitamari,Masayuki Kiso,Seigo Kurosaka,Yukinori Oda,Yoshiji Saijo,Katsuhisa Tanabe,徹 上玉利,幸典 小田,雅之 木曽,克久 田辺,義司 西條,成吾 黒坂 +11 more
TL;DR: In this article, a method for maintaining the plating capability of an electroless gold-plating bath stably for a long period of time, which can provide the plated film of gold showing excellent appearance without causing a poor appearance due to a progress of the intergranular corrosion of a nickel surface, was provided.
Patent
Electroless gold plating solution
TL;DR: In this article, a safe and eco-friendly electroless gold-plating solution was proposed to provide a safe, environmentally friendly electroless plating solution, and a method for producing a goldplated product by using the use of the solution.
Patent
Electroless conversion gold-plating method
TL;DR: In this article, the electroless conversion gold-plating method for plating gold on an article to be plated, which is dipped in the gold plating solution including gold cyanide salt, is characterized by plating while controlling a content of free cyanide ion included in the solution to a fixed quantity or less.