The Effect of Carbonizing Temperature on Friction and Wear Properties of Hard Porous Carbon Materials Made from Rice Husk

Abstract

The new hard porous carbon material called the RH (rice husk) ceramics has been developed by carbonizing rice husk as the main raw material. In order to clarify the friction and wear properties of RH ceramics, a study of the effect of carbonization temperature on the mechanical and tribological properties of RH ceramics was undertaken. RH ceramics samples carbonized at 900, 1400, and 1500 °C were prepared for this study. The RH ceramics samples were inspected using X-ray diffraction, EDX and scanning electron microscopy. Mechanical properties of RH ceramics such as Vickers hardness, compressive strength, and bulk density were also studied. The RH ceramics carbonized at 1500 °C had much higher porosity compared to the ones carbonized at lower temperatures. In addition, the bulk density and compressive strength decreased with increasing carbonization temperature. Whereas, the hardness was higher for the RH ceramics carbonized at higher temperatures. Ball-on-disk sliding tests showed that the RH ceramics carbonized at the conventional 900 °C have better friction and wear properties compared to the ones carbonized at 1400 and 1500 °C under dry condition sliding against austenitic stainless steel (JIS SUS304). The friction coefficient and specific wear rate took very low values of 0.07 and less and 5.0×10 -10 mm 2 /N and less, correspondingly, for the RH ceramics carbonized at 900 °C. Based on the experimental results, friction and wear mechanisms have been summarized for each carbonization temperature.

Sliding Properties of Rice Husk-derived Carbon/Silica Composite

“…，米糠 (7)(8)(9)(10)(11)(12) ，籾殻 (13)(14)(15)(16)(17)(18) などを原料とした植物 由来炭素材料の研究が進められている。炭素材料は自己潤滑 性，耐薬品性，耐熱性に優れており，金属材料を使用できない 薬液中や，潤滑剤を使用できない高温乾燥の環境下での摺動材 料として用いられる。堀切川らは，フェノール樹脂をバインダ に使用して，米糠と籾殻に由来する RB セラミックスと RH セ ラミックスを製造した。900-1000℃で焼成した RB セラミッ クスとRH セラミックスは，摩擦係数0.07-0.17，比摩耗量1.0×…”

Investigation into the morphology, composition, structure and dry tribological behavior of rice husk ceramic particles

“…However, the same was not detected for A 2 lO 3 , hence the high friction coefficient (0.14-0.23). The study also investigated the effect of carbonization temperature (900 °C, 1,400 °C, and 1,500 °C) on the tribological performance of the RHC and found 900 °C as the best carbonization temperature [9]. However, research on the effects of load and velocity on the tribological behaviors of RHC adobes (RHAs) remains limited.…”

Tribological performance of rice husk ceramic particles as a solid additive in liquid paraffin

“…The same authors also investigated the effect of the variation of carbonization temperature (900, 1,400, and 1,500 °C) on the tribological performance of RHC particles. They found that 900 °C was the optimum carbonization temperature [7]. Shibata et al [8] also investigated the tribological performance of disk-shaped RHC materials sliding against stainless steel, alumina, silicon carbide, and silicon nitride under dry conditions.…”