Figure 4.
The average friction coefficients of PEEK and CFRPEEK in the constant load nanoscratch tests: (a) 10 mN, (b) 30 mN, and (c) 60 mN.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.