Correction to “Direct Difluoromethylation of Aryl Halides via Base Metal Catalysis at Room Temperature”

2017 ◽  
Vol 139 (10) ◽  
pp. 3917-3917 ◽  
Author(s):  
Long Xu ◽  
David A. Vicic
Keyword(s):  
Base Metal ◽  
Room Temperature ◽  
Aryl Halides ◽  
Metal Catalysis

scholarly journals Analysis of the Microstructure and Mechanical Properties of TiBw/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 875
Author(s):  
Hao Tian ◽  
Jianchao He ◽  
Jinbao Hou ◽  
Yanlong Lv
Keyword(s):  
Mechanical Properties ◽  
Base Metal ◽  
Matrix Composite ◽  
Room Temperature ◽  
Filler Metal ◽  
Ceramic Fiber ◽  
Tensile Fracture ◽  
Alloy Matrix ◽  
Composite Joint ◽  
Secondary Cracks

TiB crystal whiskers (TiBw) can be synthesized in situ in Ti alloy matrix through powder metallurgy for the preparation of a new type of ceramic fiber-reinforced Ti matrix composite (TMC) TiBw/Ti-6Al-4V. In the TiBw/Ti-6Al-4V TMC, the reinforced phase/matrix interface is clean and has superior comprehensive mechanical properties, but its machinability is degraded. Hence, the bonding of reliable materials is important. To further optimize the TiBw/Ti-6Al-4V brazing technology and determine the relationship between the microstructure and tensile property of the brazed joint, results demonstrate that the elements of brazing filler metal are under sufficient and uniform diffusion, the microstructure is the typical Widmanstätten structure, and fine granular compounds in β phase are observed. The average tensile strength of the brazing specimen is 998 MPa under room temperature, which is 97.3% of that of the base metal. During the high-temperature (400 °C) tensile process, a fracture occurred at the base metal of the highest tensile test specimen with strength reaching 689 MPa, and the tensile fracture involved a combination of intergranular and transgranular modes at both room temperature and 400 °C. The fracture surface has dimples, secondary cracks are generated by the fracture of TiB whiskers, and large holes form when whole TiB whiskers are removed. The proposed algorithm provides evidence for promoting the application of TiBw/Ti-6Al-4V TMCs in practical production.

Synthesis of Plakortolides E and I Enabled by Base Metal Catalysis

2021 ◽  
Author(s):  
Stefan Leisering ◽  
Alexandros Mavroskoufis ◽  
Patrick Voßnacker ◽  
Reinhold Zimmer ◽  
Mathias Christmann
Keyword(s):  
Base Metal ◽  
Metal Catalysis

Sterically encumbered β-diketonates and base metal catalysis

2019 ◽  
Vol 48 (28) ◽  
pp. 10714-10722 ◽  
Author(s):  
Sebastian M. Krajewski ◽  
Aaron S. Crossman ◽  
Eser S. Akturk ◽  
Tim Suhrbier ◽  
Steven J. Scappaticci ◽  
...  
Keyword(s):  
Base Metal ◽  
Coordination Complexes ◽  
Metal Coordination ◽  
Metal Catalysis ◽  
Sterically Hindered ◽  
Cu And Zn

Metal coordination complexes of the sterically hindered β-diketonate, 2,6-dimesitylbenzoyl pinacolone (esac), are reported for Co, Ni, Cu, and Zn.

Pd/C-catalyzed room-temperature hydrodehalogenation of aryl halides with hydrazine hydrochloride

2003 ◽  
Vol 44 (38) ◽  
pp. 7191-7195 ◽  
Author(s):  
Pascal P Cellier ◽  
Jean-Francis Spindler ◽  
Marc Taillefer ◽  
Henri-Jean Cristau
Keyword(s):  
Room Temperature ◽  
Aryl Halides
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