Thermal conductivity and mechanical properties of graphite/Mg composite with a super-nano CaCO interfacial layer.

Incorporating graphite/graphene into a Mg alloy matrix is a promising approach for developing lightweight heat dissipation materials. However, carbon material is inherently incompatible with Mg because of their distinctly different surface characteristics, resulting in the challenge of composite fabricating and interface controlling. Herein, a new strategy of interfacial modification was proposed to achieve excellent thermal conductivity and mechanical properties in graphite/Mg composites.

Initiation and Suppression of Crack Propagation during Magnesium Alloy Rolling.

The conventional rolling of magnesium alloy with a single pass and large reduction will cause severe edge cracking. The sheet without cracks can be achieved by limited width rolling. The microstructure evolution of the sheet with cracks after conventional rolling and the sheet without cracks after limited width rolling is explored, and an effective mechanism for solving edge cracks is proposed.

[Determination and fingerprint analysis of tetramethylpyrazine and ferulic acid in Ligusticum chuanxiong].

Objective: To determine the contents of tetramethylpyrazine (TMP) and ferulic acid in Ligusticum chuanxiong from different producing areas and seasons.

Methods: The contents of TMP and ferulic acid were determined by HPLC, and then analyzed by Chromatographic Fingerprints.

Results: The contents of TMP and ferulic acid from different seasons were obviously different from each other.