Tribochemical silica coating is a common practice to achieve suitable adhesion with intended synthetic substrates or natural tissues, and the key to this technology is the preparation of alumina abrasive coated by nano-silica (AACNS). In this paper, a novel physical method of producing silicon nanoparticles (SiNPs) that is the base to AACNS is put forward in this paper. The source of the silica coating is from SiNPs that are produced from spark erosion in deionised water, with an average size distribution between 30 and 50 nm as indicated by SEM analysis. Under optimised mixing conditions, 2 g of purified SiNPs were mixed with 20 g of alumina µ-particles (with an approximate diameter of 100 µm), in the presence of ethanol and stirred thoroughly to form a slurry. The slurry is the then co-fired in an oxidation furnace, initially heated to 120 °C for 20 minutes to evaporate the ethanol, and then re-uploaded again after compaction in a temperature of 1100 °C for 2 hours, after which AACNS are obtained. Afterwards, shear bond strength tests are applied on zirconia ceramic bars, whose surface is modified by AACNS. The result shows that average bond strength is about 12 MPa. This method also could be applied to prepare other kinds of abrasive coated by different nanoparticles for improving the bonding strength between coatings and substrates by the method of tribochemical.

摩擦化学二氧化硅涂层是获得与预期的合成基材或天然组织的适当粘合力的一种常见做法，而该技术的关键是制备用纳米二氧化硅（AACNS）涂层的氧化铝磨料。本文提出了一种新的物理方法制备硅纳米粒子（SiNPs），它是AANCS的基础。二氧化硅涂层的来源来自SiNPs，这些SiNPs是在去离子水中因电火花腐蚀而产生的，如SEM分析所示，其平均粒径分布在30至50 nm之间。在优化的混合条件下，在乙醇存在下，将2 g纯化的SiNP与20 g氧化铝µ-颗粒（直径约为100 µm）混合，并充分搅拌以形成浆液。然后将浆液在氧化炉中共烧，首先将其加热到120°C，持续20分钟以蒸发掉乙醇，然后在1100°C的温度下压实2小时后再次重新加载，然后获得AACNS。然后，对氧化锆陶瓷棒进行抗剪强度测试，其表面经过AACNS改性。结果表明，平均粘结强度为约12MPa。该方法还可以应用于通过摩擦化学的方法制备由不同的纳米颗粒涂覆的其他种类的磨料，以提高涂层与基底之间的结合强度。结果表明，平均粘结强度为约12MPa。该方法还可以应用于通过摩擦化学的方法制备由不同的纳米颗粒涂覆的其他种类的磨料，以提高涂层与基底之间的结合强度。结果表明，平均粘结强度为约12MPa。该方法还可以应用于通过摩擦化学的方法制备由不同的纳米颗粒涂覆的其他种类的磨料，以提高涂层与基底之间的结合强度。