Sunthornpan, Narin, Krittapon Chancherdchu, Warawut Rittiphat, and Nutthanun Moolsradoo. 2016. “Study on the Influence of Silicon Element on Friction Coefficient of Diamond-Like Carbon Film Annealed Under High Temperature”. Thai Industrial Engineering Network Journal 2 (2):8-13. https://ph02.tci-thaijo.org/index.php/ienj/article/view/179517.