The surface morphology, cross-sections, and joint break force（JBF） of joints welded under different electrode forces were studied. The defects, such as electrode sticking, notch, and excessive expulsions, were obser...The surface morphology, cross-sections, and joint break force（JBF） of joints welded under different electrode forces were studied. The defects, such as electrode sticking, notch, and excessive expulsions, were observed in the joints. No desirable joints were achieved with the consideration of weld geometries and joint performances. From the cross-sectional morphology, the joint evolution during the RMW of Pt alloy and 316 LVM SS wires was developed, which involved cold collapse and heat promoted set-down of Pt alloy wire, unbalanced heating at interface, molten phase squeezed out, and defect formation. Finally, the defect formation was also discussed.展开更多
To get the IR spectrums of Agrimonia Pilosa Ledeb(APL)from China and Japan areas,and to find out the characters of IR spectrums through the content of different chemical constituents,to provide a fast and effective an...To get the IR spectrums of Agrimonia Pilosa Ledeb(APL)from China and Japan areas,and to find out the characters of IR spectrums through the content of different chemical constituents,to provide a fast and effective analysis method monitor the inherent qualities of traditional Chinese medicine-APL.Fourier Transform Infrared Spectroscopy(FT-IR)was applied to detect sample of APL from China and Japan areas.This study showed that the IR spectra of APL from China and Japan areas have their unique IR fingerprint features.The contents of tannin and calcium phosphate in APL from China is different APL from Japan.So FT-IR is a very quick,effective and well repetitive method for monitoring and distinguishing the traditional Chinese medicine.展开更多
HZSM-5, Pt-exchanged and impregnated PtHZSM-5 zeolites were prepared, which have different characteristics of OH group, and the IR spectra of hexene-1 adsorbed on these zeolites were investigated.
基金Funded by the National Natural Science Foundation of China(No.51365044)the State Key Laboratory for Mechanical Behavior of Materials(No.20111203)the State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology(No.AWJ-M13-09)
文摘The surface morphology, cross-sections, and joint break force（JBF） of joints welded under different electrode forces were studied. The defects, such as electrode sticking, notch, and excessive expulsions, were observed in the joints. No desirable joints were achieved with the consideration of weld geometries and joint performances. From the cross-sectional morphology, the joint evolution during the RMW of Pt alloy and 316 LVM SS wires was developed, which involved cold collapse and heat promoted set-down of Pt alloy wire, unbalanced heating at interface, molten phase squeezed out, and defect formation. Finally, the defect formation was also discussed.
基金supported by Research Foundation for Science and Technology Innovation Talents of Harbin(2010RFQXS072)Scientific Research Foundation for the Returned Overseas Chinese Scholars of Heilongjiang Province of China(200923)
文摘To get the IR spectrums of Agrimonia Pilosa Ledeb(APL)from China and Japan areas,and to find out the characters of IR spectrums through the content of different chemical constituents,to provide a fast and effective analysis method monitor the inherent qualities of traditional Chinese medicine-APL.Fourier Transform Infrared Spectroscopy(FT-IR)was applied to detect sample of APL from China and Japan areas.This study showed that the IR spectra of APL from China and Japan areas have their unique IR fingerprint features.The contents of tannin and calcium phosphate in APL from China is different APL from Japan.So FT-IR is a very quick,effective and well repetitive method for monitoring and distinguishing the traditional Chinese medicine.
文摘HZSM-5, Pt-exchanged and impregnated PtHZSM-5 zeolites were prepared, which have different characteristics of OH group, and the IR spectra of hexene-1 adsorbed on these zeolites were investigated.
