[Xue, Z.] N China Elect Power Univ, Sch Energy & Power Engn, State Educ Minist, Key Lab Condit Monitoring & Control Power Plant E, Beijing 102206, Peoples R China.
[Kuang, J.] Changsha Univ Sci & Technol, Dept Mat Sci & Engn, Changsha 410076, Hunan, Peoples R China.
[Fu, H.] Tsinghua Univ, State Educ Minist, Key Lab Adv Mfg Mat Proc Technol, Beijing 100084, Peoples R China.
[Xue, Z.] N China Elect Power Univ, Sch Energy & Power Engn, State Educ Minist, Key Lab Condit Monitoring & Control Power Plant E, 2 Beinong Rd, Beijing 102206, Peoples R China.