supported by the National Key Technologies R&D Program of China(2021YFA1502100);the National Natural Science Foundation of China(22071026,22372035,22072020,22302039,2247020090);the Science Foundation of the Fujian Province(2022HZ027004,2022L3082);the 111 Project(D16008)。
A photocatalytic process was developed for intermolecular reductive coupling of aliphatic ketones with alkynes/alkenes to furnish tertiary alcohols.Mechanistic studies support that boron carbonitrides(BCN)promote the ...
the National Natural Science Foundation of China(Nos.52372059,52172068,52232004,and 52002092);the Heilongjiang Natural Science Fund for Young Scholars(No.YQ2021E017);the Fundamental Research Funds for the Central Universities(No.2022FRFK060012);the Heilongjiang Touyan Team Program,and the Advanced Talents Scientific Research Foundation of Shenzhen:Yu Zhou.the Beijing Engineering Research Center of Efficient and Green Aerospace Propulsion Technology and Advanced Space Propulsion Laboratory of BICE(No.LabASP-2023-11);the Huiyan Action(No.1A423653);the Key Technologies R&D Program of CNBM(No.2023SJYL05).Ralf Riedel also gratefully acknowledges the financial support provided by the Research Training Group 2561“MatCom-ComMat:Materials Compounds from Composite Materials for Applications in Extreme Conditions”funded by the Deutsche Forschungsgemeinschaft(DFG),Bonn,Germany.
To improve the oxidation resistance of short carbon fiber(C_(sf))-reinforced mechanically alloyed SiBCN(MA-SiBCN)(C_(sf)/MA-SiBCN)composites,dense amorphous C_(sf)/SiBCN composites containing both MA-SiBCN and polymer...
financially supported by the National Natural Science Foundation of China(Grant no.52002092,51832002,52172068,52232004,52372059);Heilong Jiang Natural Science Fund for Young Scholars(Grant no.YQ2021E017);National Key Research and Development Program of China(Grant no.2017YFB0310400);Heilongjiang Touyan Team Program,Advanced Talents Scientific Research Foundation of Shenzhen,and Fundamental Research Funds for the Central Universities(2022FRFK0600XX);RR gratefully acknowledges the financial support provided by the Research Training Group 2561“MatCom-ComMat:Materials Compounds from Composite Materials for Applications in Extreme Conditions”funded by the Deutsche Forschungsgemeinschaft(DFG),Bonn,Germany.
In this study,the structural evolution of SiBCN ceramics during crystallization and its effects on oxidation behavior involving different atomic units or formed phases in amorphous or crystalline SiBCN ceramics were a...