Ca/P based bioceramic coating on aluminum plates with different surface roughness was carried out by applying immersion coating method and sequential sintering. In this study, bioceramic material with Ca and P content was coated by immersion method on 7075 series aluminum surfaces with different surface roughness in order to examine the effect of substrate material surface roughness and sintering number on coating properties. Immersion and sintering were applied in two different ways. In the first method, three-stage dipping and then one-time sintering were applied until the desired coating thickness was achieved. In the second method, sintering was performed at 580 C after each immersion and sequential sintering was performed, consisting of three dips and three times sintering. Both the number of dips and the number of sintering have been shown to affect the surface structure of the coating. Stereo microscope and scanning electron microscope (SEM) were used to study the surface structure of coatings. A micro-scratch test was performed to examine the bonding strength of the closure. Aluminum base with/P coatings due to mismatch in thermal expansion coefficients of different dip and cracking and peeling offt two times two times less sintering and sintering have been found in successive samples that went through the process under the conditions applied has been observed to reduce cracks and spills.