It has been discovered and demonstrated, via scanning electron microscope examination on 6 samples of broken glasses, that one important cause for the spontaneous breakage in tempered glass occurs as a result of the single-phase polycrystalline silicon particles, rather than simply the nickel sulfide (NiS) particles that are commonly recognized to be the main cause for the spontaneous breakage.

In this paper, nanosize silica were prepared via reverse microemulsion and elemental silicon methods.

The applying status quo and problem of silica sands and chromite sands are systematic studied in this paper,and the environmental friendship stuffing sands, olivine sands,are studied and developed,the free opening ratio of olivine sands mixed with the right amount of magnesia,bauxite,k-feldspar,graphite and carbon is up to more than 98%.

The micro-tribological and nano-mechanic properties of Ar~+ implanted single-crystal silicon were investigated by using a Micro-tribology Text and a Nano Indenter System, The results show that Ar~+ implantation of single-crystal silicon had increased the wear-resistance, the best dose is 1×10~(16) ions /cm~2.

In Chemical-Mechanical polishing experiments we produced optical quality super smooth surfaces on single-crystal silicon, but cannot insure the surface figure.

The nano-scratch behaviors of Ar+ implanted single-crystal silicon were investigated by a nano indenter system, the micro-structure of the implanted layer was analyzed with TEM.