表面黑色钛-碳处理的工艺、抗腐蚀级别---[请教]
<P>我们有一批军用刀，除刀身以外其它外露金属零件表面需<SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><FONT style="BACKGROUND-COLOR: #efefef" face=Verdana>黑色钛-碳处理，经过黑色钛-碳处理放置2个月以上就有腐蚀点、或用手拿、碰过的过一段时间就出现腐蚀点。经48小时盐酸只能达到4级，</FONT></SPAN></P><P><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><FONT style="BACKGROUND-COLOR: #efefef" face=Verdana>请大家多多指教：黑色钛-碳处理的工艺</FONT></SPAN></P>
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