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  • 专利标题:   Preparing low transmission loss single crystal copper material comprises e.g. forming single crystal copper layer on substrate i.e. graphene layer surface, and peeling off single crystal copper layer from substrate in mixed gas atmosphere of argon and hydrogen.
  • 专利号:   CN115595658-A
  • 发明人:   WANG E, YUE X, HUANG Z, HE M, ZHANG Z, DING Z
  • 专利权人:   SONGSHAN LAKE MATERIALS LAB, ZHONGKE JINGYI DONGGUAN MATERIAL TECHNOL
  • 国际专利分类:   C25D001/20, C25D003/38, C25D005/50, C25D005/54, C30B001/02, C30B023/02, C30B029/02, H05K001/09, H05K003/00
  • 专利详细信息:   CN115595658-A 13 Jan 2023 C30B-023/02 202315 Chinese
  • 申请详细信息:   CN115595658-A CN11323127 27 Oct 2022
  • 优先权号:   CN11323127

▎ 摘　　要

NOVELTY - Preparing low transmission loss single crystal copper material comprises forming a single crystal copper layer on substrate whose surface is graphene layer, and peeling off single crystal copper layer from substrate in mixed gas atmosphere of argon and hydrogen under temperature condition of 800-1065℃, where in the mixed gas, the volume ratio of the argon to the hydrogen is 10-20:1. USE - The method is useful for preparing low transmission loss single crystal copper material. ADVANTAGE - The method reduces surface roughness Rz of formed copper material, reduces transmission loss of the whole low transmission loss single crystal copper material, and is simple and easy to operate. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a low transmission loss single crystal copper material; a printed circuit board; a electronic component; and a method for preparing printed circuit board. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of the printed circuit board.