1. Department of Mechanical Engineering; Andalas University; 25163 Padang Sumatera Barat Indonesia
2. Laboratory of Sumatran Biota; Faculty of Pharmacy Andalas University; 25163 Padang Sumatera Barat Indonesia
3. Department of Mechanical and Manufacturing Engineering; Faculty of Engineering; Universiti Putra Malaysia; 43400 UPM Serdang Selangor Malaysia
4. Department of Information System; STMIK Indonesia Padang; Padang 25136 Indonesia
5. Laboratory of High-Temperature Coating; Research Center for Physics Indonesian Institute of Sciences (LIPI); Serpong 15314 Indonesia