US 12,344,939 B2
SUS surface treatment method
Guo Tie Long, Shenzhen (CN); and Tan Yonggang, Shenzhen (CN)
Assigned to DONGGUAN DSP TECHNOLOGY CO., LTD., Dongguan (CN)
Filed by DONGGUAN DSP TECHNOLOGY CO., LTD., Dongguan (CN)
Filed on Dec. 23, 2022, as Appl. No. 18/146,033.
Claims priority of application No. 2021-215308 (JP), filed on Dec. 28, 2021.
Prior Publication US 2023/0203671 A1, Jun. 29, 2023
Int. Cl. C23F 1/28 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/44 (2006.01); C22C 38/58 (2006.01); B29C 65/00 (2006.01)
CPC C23F 1/28 (2013.01) [C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/44 (2013.01); C22C 38/58 (2013.01); B29C 66/74283 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A SUS surface treatment method for bonding with a polymer composite which comprises:
(a) a first etching step wherein the SUS surface is etched by acidic solution;
(b) a surface treatment step wherein the SUS surface is treated by ultrasonic wave;
(c) a second etching step wherein the SUS surface is etched again by acidic solution;
(d) a first silane coupling treatment step wherein the SUS surface is treated by anodic oxidation;
(e) a third etching step wherein the SUS surface is etched by acidic solution; and
(f) a second silane coupling treatment step wherein the SUS surface is treated by anodic oxidation.