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您的检索式：作者名="Ma Zhengzhong"
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| 1 | Mullite Oxidation Resistant Coating for SiC-coated Carbon/Carbon Composites by Supersonic Plasma Spraying显示文摘To improve the oxidation resistance of carbon/carbon (C/C) composites, mullite coating was prepared on the surface of SiC-coated C/C composites by supersonic plasma spraying. Phases and microstructures of mullite coating were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The coating primarily consists of a single phase of mullite (3Al2O3-2SiO2). The SEM results show that mullite coating was continuous and well bonded with the SiC inner layer without penetrating crack. Mullite coating exhibited good oxidation resistance. After 98.5 h oxidation at 1773 K and 9 thermal shock cycles between 1773 K and room temperature, the weight loss of the coated C/C composites was only 2.57%. | Chao Ma Hejun Li Heng Wu Qiangang Fu Can Sun Xiaohong Shi Yulei Zhang Zhengzhong Zhang Jun Tao Zhihai Han | 2013 | Journal of Materials Science & Technology2013，29，1： | 4 |
| 2 | Provenance and paleogeography of Carboniferous-Permian strata in the Bayanhot Basin:Constraints from sedimentary records and detrital zircon geochronology显示文摘The Bayanhot Basin is a superimposed basin that experienced multiple-staged tectonic movements;it is in the eastern Alxa Block,adjacent to the North China Craton(NCC)and the North Qilian Orogenic Belt(NQOB).There are well-developed Paleozoic-Cenozoic strata in this basin,and these provide a crucial window to a greater understanding of the amalgamation process and source-to-sink relationships between the Alxa Block and surrounding tectonic units.However,due to intensive post-depositional modification,and lack of subsurface data,several fundamental issues-including the distribution and evolution of the depositional systems,provenance supplies and source-to-sink relationships during the Carboniferous-Permian remain unclear and thus hinder hydrocarbon exploration and limit the geological understanding of this basin.Employing integrated outcrop surveys,new drilling data,and detrital zircon dating,this study examines the paleogeographic distribution and evolution,and provenance characteristics of the Carboniferous-Permian strata in the Bayanhot Basin.Our results show that the Bayanhot Basin experienced a long-term depositional evolution process from transgression to retrogression during the Carboniferous-late Permian.The transgression extent could reach the central basin in the early Carboniferous.The maximum regional transgression occurred in the early Permian and might connect the Qilian and North China seas with each other.Subsequently,a gradual regression followed until the end of the Permian.The northwestern NCC appeared as a paleo-uplift area and served as a sediments provenance area for the Alxa Block at that time.The NCC,Bayanwula Mountain,and NQOB jointly served as major provenances during the Carboniferous-Permian.There was no ocean separation,nor was there an orogenic belt between the Alxa Block and the NCC that provided sediments for both sides during the Carboniferous-Permian.The accretion of the Alxa and North China blocks should have been completed before the Carboniferous period. | Junfeng Zhao Yijun Zhou KeWang Xuan Li Zhanrong Ma Zhengzhong Ruan DongWang Rui Xue | 2021 | Geoscience Frontiers2021，12，3： | 2 |
| 3 | Acrylic polymer-silk fibroin blend fibers 显示文摘 | Sun Yuyu Shao Zhengzhong Ma Minghua | 1997 | Journal of Applied Polymer Science1997，65，5： | 1 |
| 4 | Capturing Moving Interfaces by LevelSet Method with Ghost Technique显示文摘SMAC 方法被采用解决海军司烧方程,由使用第五顺序的 WENO 计划和 TVD R-K 计划, LevelSet 方法被用来与改进的鬼技术捕获动人的接口。一些例子,例如一个和二种尺寸的不可压缩的 inviscid 火焰接口并且水里的油水泡合并上升,被计算并且有商业 CFD 软件的结果的比较流畅被做了。有在捕获移动的鬼技术的 LevelSet 方法的合理性连接与跳条件被肯定。没有复杂重建,水平集合方法能严厉地捕获接口并且能容易被规划,这被显示出。 | Wang Xueyao Liu Shi Liu Changchun Jiang Fan Li Zhihong Ma Zhengzhong | 2007 | Journal of Thermal Science2007，16，4： | 0 |
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