25℃NH_4Cl-KCl- H_2O三元体系相平衡的研究

研究了２５℃ＮＨ４Ｃｌ－ＫＣｌ－Ｈ２Ｏ三元体系的固液相平衡关系,测定出有关溶解度数据, 结果表明该体系存在纯 ＮＨ４Ｃｌ、纯 ＫＣｌ、 ＮＨ４Ｃｌ为主的固溶体及 ＫＣｌ为主的固溶体等 ４个 结晶区．     

Effect of deteriorated microstructures on stress corrosion cracking of X70 pipeline steel in acidic soil environment

In order to investigate stress corrosion cracking (SCC) of X70 pipeline steel and its weld joint area in acidic soil environ-ment in China, two simulating methods were used: one was to obtain bad microstructures in heat affected zone by annealing at 1300°C for 10 min and then, quenching in water; the other was to get different simulating solutions of acidic soil in Yingtan in south-east China. The SCC susceptibilities of X70 pipeline steel before and after quenching in the simulating solutions were analyzed...     

多种金属氧化物混合物的固溶体的穆斯堡尔效应及XRD分析研究

在αFe_2O_3中依次累积加入K_2O、Cr_2O_3、CuO、MGO和SiO_2形成不同混合物,在空气中800℃活化焙烧5h后,发现αFe_2O_3和所加氧化物之间发生了不同的反应,生成不同的化合物。该结果有助于进一步理解这些氧化物作为助剂和载体的作用。     

贫液除杂与污水零排放的试验研究

根据仓上金矿生产实际情况,探讨了贫液除杂质的途径及除杂后对浸出效果的影响,为仓上金矿实现氰化污水零排放提供了基础资料。     

ZL205A高强度铝铜合金的铸造及热处理

探讨了ＺＬＮ２０５Ａ高强度铝铜合金的铸造性能和热处理工艺方法，阐述了ＺＬ２０５Ａ铝铜合金在Ｔ５热处理时，如何才能达到机械性能的工艺方法。     

利用均匀设计试验进行混凝土配合比优化

提出了混凝土配合比试验的均匀设计方法,采用逐步回归法对试验数据进行回归拟合,以经济成本为目标函数,利用目标规划的方法进行混凝土配合比优化．     

Levy-type solution for buckling analysis of orthotropic plates based on two variable refined plate theory

This paper presents closed-form solution for buckling analysis of orthotropic plates using two variable refined plate theory. The theory accounts for a quadratic variation of the transverse shear strains across the thickness, and satisfies the zero traction boundary conditions on the top and bottom surfaces of the plate without using shear correction factors. Governing equations are derived from the principle of minimum total potential energy. The closed-form solutions of rectangular plates with two opposite edges simply supported and the other two edges having arbitrary boundary conditions are obtained by applying the state space approach to the Levy-type solution. Comparison studies are performed to verify the validity of the present results. The effects of boundary condition, loading condition, and variations of modulus ratio, aspect ratio, and thickness ratio on the critical buckling load of orthotropic plates are investigated and discussed in detail.     

A_Ⅰ型多元固溶体价电子结构的计算

利用“固体与分子经验电子理论”提出:1)A(?)型多元置换、间隙式固溶体价电子结构计算的模型;z)末知键距结构的键距差(BLD)分析方法;3)BLD分析中解的不唯一性的处理。     

High Phase Purity of Large‐Sized 1T′‐MoS2 Monolayers with 2D Superconductivity

The development of transition metal dichalcogenides has greatly accelerated research in the 2D realm, especially for layered MoS₂. Crucially, the metallic MoS₂ monolayer is an ideal platform in which novel topological electronic states can emerge and also exhibits excellent energy conversion and storage properties. However, as its intrinsic metallic phase, little is known about the nature of 2D 1T′‐MoS₂, probably because of limited phase uniformity (<80%) and lateral size (usually <1 µm) in produced materials. Herein, solution processing to realize high phase‐purity 1T′‐MoS₂ monolayers with large lateral size is demonstrated. Direct chemical exfoliation of millimeter‐sized 1T′ crystal is introduced to successfully produce a high‐yield of 1T′‐MoS₂ monolayers with over 97% phase purity and unprecedentedly large size up to tens of micrometers. Furthermore, the large‐sized and high‐quality 1T′‐MoS₂ nanosheets exhibit clear intrinsic superconductivity among all thicknesses down to monolayer, accompanied by a slow drop of transition temperature from 6.1 to 3.0 K. Prominently, unconventional superconducting behavior with upper critical field far beyond the Pauli limit is observed in the centrosymmetric 1T′‐MoS₂ structure. The results open up an ideal approach to explore the properties of 2D metastable polymorphic materials.