1. Material and Mineral Research UnitFaculty of EngineeringUniversiti Malaysia Sabah Jalan UMS 88400 Kota Kinabalu Sabah Malaysia
2. Institute of Advanced MaterialsJiangxi Normal University 99 Ziyang Avenue Nanchang City Jiangxi Province 330022 China
3. Department of Functional Machinery and MechanicsShinshu University 3‐15‐1 Tokida Ueda 386‐8576 Japan